The OTR Evaporator is designed to reduce dust, pollen and mold particles from the air, helping to improve visibility and make driving safer. The evaporator also helps to reduce energy costs by reducing the need for air conditioning and heating. This air purifier is perfect for those who suffer from allergies or asthma, as it helps to remove airborne particles and allergens. It is easy to install and maintain, making it an excellent choice for a comfortable ride. FleetPride is your First Click in Heavy Duty®.